Sliding and swinging window sash structure



June 7, 1955 F. s. NICOLL, JR 2,709,839

SLIDING AND SWINGING WINDOW SASH sggucwuRE Filed Sept 25, 1953 INVENTOR.FRANK s. NICOLL. JR.

Maw/w AT TO NE Y SLIDING AND SWHNGENG WINDOW SASH STRUCTURE Frank S.Nicoll, Jan, Baltimore, Md.

Application September 25, 1953, Serial No. 382,353

1 Claim. (Cl. 20-42} This invention relates to the components ofbuildings and more particularly to windows for same. Further the windowsherein presented belong to the class known as outwardly swinging windowsextendable in a horizontal plane.

The invention has in its objects the provision of a new and improvedwindow friction hinge assembly including its mechanism, that will avoidone or more of the disadvantages and limitations of the prior art.

Another object of this invention is to provide a new and improvedfriction hinge assembly for a swinging window that will be simple inconstruction, effective in operation, and economical to manufacture.

Other objects of the invention will become apparent as its details aremore fully explained.

To explain the invention more clearly, reference is made to theaccompanying drawings. These drawings when used in conjunction with thefollowing description portray a particular type of the invention by wayof example, while the claim emphasizes its scope.

In the drawings:

Figure 1 is a view in perspective of a window sash and mechanismembodying this invention, in open position;

Figure 2 is a partial sectional view in elevation of Figure l on line 22thereof;

Figure 3 is a sectional elevation through the window sash and mechanismin its closed position; and

Figure 4 is a longitudinal sectional detail of the sash supportingmember employed in this embodiment.

Similar reference numerals pertain to the same parts throughout thedrawings.

The structure shown in the drawings comprises a conventional windowframe 10 adaptable for installation in the wall opening of a building. Asash 11 with glass 12 in its sides 13 is of rectangular form and issupported on an angular member 14 attached to the underside of eachvertical side of the sash, by screws 15. This member has holes adjacentits ends in which bolts, rivets or other suitable fasteners 16 and 22are inserted to secure and pivot them to an upper or short set of links17 and a set of brace or long links 18. The links 17 and 18 are pivotlyattached to mounting plates or brackets 19 and 21, preferably screwed tothe wall of the frame 10 near the lintel and sill respectively. Thelinks 17 are relatively short and serve to guide the upper portion ofthe sash into the frame 10 so it will fit tightly therein. The bracebars or long links 18 are pivotly secured to the bottom portions of eachmember 14 at one end, while the opposite end portion of the bars 18 arepivotly attached to a mounting plate or bracket 21 attachably screwed tothe inner surface of the wall of the frame. The members 14 are attachedto the window sash at a location reaching from the proximate middle areaof the sash sides to the upper horizontal side of the sash. Thispositions the pivoting points of nited States Patent 2,709,839 PatentedJune 7, 1955 the bars 18 in close alignment with a line passing hori-.

zontally through the center of gravity of the sash. When the bars 18 arearranged in the window frame 10 as the window is in closed position, itbrings the links 17 and 18 into vertical alignment behind the sash andparallel thereto. This prevents the mechanism from interfering with thetight closure of the sash in the frame. The fasteners 22 used at thejunctures between the bars 18 and the lower end portions of thesupporting members 14 are reinforced with friction washers 23 inbetween, to adjustably create sufficient frictional resistance to holdthe sash in any open position that it may be swung to. This isaccomplished by tightening the nut 24 on the fastener bolt 22. An arm 25is afiixed to the long link 13 and assists in supporting the bolt 22.

The mechanism used in the manipulation of the sash is especially simple,since it requires only three sets of principal elements, the links 17,the members 14 and the long links or brace bars 18. The brackets ormounting plates 19 and 21 are stationary and provide for stableattachments placed so that the possibilities of the user having hishands caught and injured by them is very remote. The swing of the sashis graceful and provides for adequate opening for ventilation orcleaning, and the closing operation is simple and brings about fulltightness against the weather, and a dead center locking of themechanism. The mechanism is protectably closed in behind the sash, whenthe window is in closed position.

While but one general form of the invention is shown in the drawings anddescribed in the specifications, it is not desired to limit thisapplication for patent to this particular form as it is appreciated thatother forms of construction could be made that would use the principlesand come within the scope of the appended claim.

Having thus described the invention, what is claimed is:

The combination, with a window frame, of a sash and linkage pivotallyconnecting said sash to said frame for movement from a position in whichsaid sash is housed within said frame to any one of a plurality ofpositions in which the sash is located outside of the frame and extendsobliquely with respect thereto; said linkage comprising a pair ofmounting plates secured to the side rails of the window frame near theupper ends thereof, a second pair of mounting plates secured to saidside rails and located below the first mentioned mounting plates,members secured one each to the opposite side rails of the sash, a pairof links connecting the upper ends of said members to the upper mountingplates, a second pair of links connecting the lower ends of said membersto the lower mounting plates, the lower pair of links being longer thanthe upper pair, locking means forming part of said linkage for holdingthe sash in selected oblique position with respect to the window frame,said locking means comprises a pair of bolts pivotally connecting one ofthe pairs of links to the members on the side rails of the sash and anut on each bolt, said members secured to the side rails of the sash areangular in cross section, and an arm is secured to each of the links ofsaid one pair and overlies a flange of the adjacent member and isadapted to be clamped against said flange by the adjacent nut.

References Cited in the file of this patent UNITED STATES PATENTS1,621,463 Estrada Mar. 15, 1927 2,292,133 Larson Aug. 4, 1942 2,486,407Hoffman Nov. 1, 1949 2,644,206 Hoffman July 7, 1953

